Searched full:gain (Results 1 – 25 of 112) sorted by relevance
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| /Documentation/userspace-api/media/v4l/ |
| D | ext-ctrls-rf-tuner.rst | 50 Enables/disables LNA automatic gain control (AGC)
53 Enables/disables mixer automatic gain control (AGC)
56 Enables/disables IF automatic gain control (AGC)
61 LNA gain and the RF gain in this document is that the LNA gain is
62 integrated in the tuner chip while the RF gain is a separate chip.
63 There may be both RF and LNA gain controls in the same device. The
67 LNA (low noise amplifier) gain is first gain stage on the RF tuner
70 ``V4L2_CID_RF_TUNER_RF_GAIN`` to understand how RF gain and LNA gain
75 Mixer gain is second gain stage on the RF tuner signal path. It is
81 IF gain is last gain stage on the RF tuner signal path. It is
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| D | ext-ctrls-image-source.rst | 36 Analogue gain is gain affecting all colour components in the pixel
37 matrix. The gain operation is performed in the analogue domain
84 control taking 4 gain values, being the gains for each of the
91 The units for the gain values are linear, with the default value
92 representing a gain of exactly 1.0. For example, if this default value
94 a gain of exactly 1.5.
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| D | ext-ctrls-image-process.rst | 53 Digital gain is the value by which all colour components
54 are multiplied by. Typically the digital gain applied is the
56 digital gain the control value needs to be 0x100. The no-gain
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| D | control.rst | 72 Picture contrast or luma gain.
75 Picture color saturation or chroma gain.
135 Automatic gain/exposure control.
138 Gain control.
140 Primarily used to control gain on e.g. TV tuners but also on
141 webcams. Most devices control only digital gain with this control
142 but on some this could include analogue gain as well. Devices that
143 recognise the difference between digital and analogue gain use
190 Chroma automatic gain control.
193 Adjusts the Chroma gain control (for use when chroma AGC is
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| /Documentation/userspace-api/media/drivers/ |
| D | ccs.rst | 69 Analogue gain model
72 The CCS defines an analogue gain model where the gain can be calculated using
75 gain = m0 * x + c0 / (m1 * x + c1)
85 The analogue gain (``x`` in the formula) is controlled through
88 Alternate analogue gain model
91 The CCS defines another analogue gain model called alternate analogue gain. In
92 this case, the formula to calculate actual gain consists of linear and
95 gain = linear * 2 ^ exponent
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| /Documentation/devicetree/bindings/iio/afe/ |
| D | current-sense-amplifier.yaml | 30 sense-gain-mult:
32 description: Amplifier gain multiplier. The default is <1>.
34 sense-gain-div:
36 description: Amplifier gain divider. The default is <1>.
52 sense-gain-mult = <50>;
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| /Documentation/ABI/testing/ |
| D | sysfs-bus-iio-isl29501 | 6 This sensor has an automatic gain control (agc) loop
8 level by controlling programmable gain amplifiers. The
9 criteria for optimal gain is determined by the sensor.
11 Return the actual gain value as an integer in [0; 65536]
14 The agc gain read when measuring crosstalk shall be
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| D | sysfs-bus-iio-frequency-admv1014 | 5 Read/write value for the digital attenuator gain (IF_I) with coarse steps.
11 Read/write value for the digital attenuator gain (IF_Q) with coarse steps.
17 Read/write value for the digital attenuator gain (IF_I) with fine steps.
23 Read/write value for the digital attenuator gain (IF_Q) with fine steps.
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| /Documentation/devicetree/bindings/hwmon/ |
| D | ti,ina2xx.yaml | 44 ti,shunt-gain:
46 Programmable gain divisor for the shunt voltage accuracy and range. This
48 gain value is used configure the gain and to convert the shunt voltage,
53 the gain value maps directly with the PG bits of the config register.
55 For devices that have ADCRANGE configuration (e.g. INA238) a shunt-gain
56 value of 1 maps to ADCRANGE=1 where no gain divisor is applied to the
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| D | ti,tmp513.yaml | 39 rshunt <= pga-gain * 40 * 1000 * 1000.
43 ti,pga-gain:
45 The gain value for the PGA function. This is 8, 4, 2 or 1.
46 The PGA gain affect the shunt voltage range.
47 The range will be equal to: pga-gain * 40mV
91 ti,pga-gain = <8>;
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| /Documentation/devicetree/bindings/iio/dac/ |
| D | adi,ad3552r.yaml | 93 adi,gain-offset:
94 description: Gain offset used in the above formula
99 adi,gain-scaling-p:
100 description: GainP = 1 / ( 2 ^ adi,gain-scaling-p)
104 adi,gain-scaling-n:
105 description: GainN = 1 / ( 2 ^ adi,gain-scaling-n)
113 - adi,gain-offset
114 - adi,gain-scaling-p
115 - adi,gain-scaling-n
233 adi,gain-offset = <5>;
[all …]
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| /Documentation/devicetree/bindings/iio/light/ |
| D | upisemi,us5182.yaml | 33 upisemi,upper-dark-gain:
36 8-bit dark gain compensation factor(4 int and 4 fractional bits - Q4.4)
40 upisemi,lower-dark-gain:
43 8-bit dark gain compensation factor(4 int and 4 fractional bits - Q4.4)
74 upisemi,upper-dark-gain = /bits/ 8 <0x00>;
75 upisemi,lower-dark-gain = /bits/ 8 <0x16>;
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| D | amstaos,tsl2563.yaml | 26 amstaos,cover-comp-gain:
27 description: Multiplier for gain compensation
47 amstaos,cover-comp-gain = <16>;
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| /Documentation/devicetree/bindings/regulator/ |
| D | max1586-regulator.txt | 6 - v3-gain: integer specifying the V3 gain as per datasheet
16 v3-gain = <1000000>;
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| /Documentation/devicetree/bindings/sound/ |
| D | maxim,max9759.yaml | 24 gain-gpios:
32 - gain-gpios
43 gain-gpios = <&gpio3 23 GPIO_ACTIVE_LOW>,
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| D | cs35l34.txt | 41 - cirrus,gain-zc-disable: Boolean property. If set, the gain change will take
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| /Documentation/sound/soc/ |
| D | pops-clicks.rst | 31 a PGA (programmable gain amplifier) before being output to the speakers.
51 when a volume control is changed near its maximum gain value. The zipper noise
52 is heard when the gain increase or decrease changes the mean audio signal
54 for each volume control. The ZC forces the gain change to occur when the signal
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| /Documentation/devicetree/bindings/iio/adc/ |
| D | adi,ad4000.yaml | 109 adi,gain-milli:
111 The hardware gain applied to the ADC input (in milli units).
112 The gain provided by the ADC input scaler is defined by the hardware
114 If not present, default to 1000 (no actual gain applied).
151 # Gain property only applies to ADAQ devices
162 adi,gain-milli: false
195 adi,gain-milli = /bits/ 16 <454>;
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| D | adi,ad7780.yaml | 15 Its interface also allows writing on the FILTER and GAIN GPIO pins on the
50 adi,gain-gpios:
52 Must be the device tree identifier of the GAIN pin. Only for
85 adi,gain-gpios = <&gpio1 5 GPIO_ACTIVE_LOW>;
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| D | ti,ads131e08.yaml | 15 built-in programmable gain amplifier (PGA), internal reference
96 ti,gain:
98 The PGA gain value for the channel.
99 If this field is left empty, PGA gain 1 is used.
158 ti,gain = <2>;
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| D | ti,ads1015.yaml | 69 ti,gain:
74 pga is the programmable gain amplifier (values are full scale)
126 ti,gain = <3>;
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| /Documentation/devicetree/bindings/iio/potentiostat/ |
| D | ti,lmp91000.yaml | 32 If the property ti,tia-gain-ohm is not defined this needs to be set to
35 ti,tia-gain-ohm:
63 ti,tia-gain-ohm = <7000>;
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| /Documentation/devicetree/bindings/iio/amplifiers/ |
| D | adi,ada4250.yaml | 7 title: ADA4250 Programmable Gain Instrumentation Amplifier
13 Precision Low Power, 110kHz, 26uA, Programmable Gain Instrumentation Amplifier.
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| /Documentation/devicetree/bindings/input/ |
| D | microchip,cap11xx.yaml | 56 microchip,sensor-gain:
61 Defines the gain of the sensor circuitry. This
117 Specifies an array of numeric values that controls the gain
120 Gain is based on touch pad capacitance range
196 microchip,sensor-gain = <2>;
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| /Documentation/input/ |
| D | ff.rst | 89 - FF_GAIN gain is adjustable
183 Setting the gain
186 Not all devices have the same strength. Therefore, users should set a gain
192 /* Set the gain of the device
193 int gain; /* between 0 and 100 */
198 ie.value = 0xFFFFUL * gain / 100;
201 perror("set gain");
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